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Finding the Fourth Proportional to 144,618.53, 199,571.36 and 80,958.60

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Solution

The fourth proportional to 144,618.53, 199,571.36 and 80,958.60 is: 111,721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,618.53 : 199,571.36 = 80,958.60 : x
  2. Step 2: Convert to fraction form
    144,618.53/199,571.36 = 80,958.60/x
  3. Step 3: Cross multiply
    144,618.53x = 199,571.36 × 80,958.60
  4. Step 4: Simplify right side
    144,618.53x = 16,157,017,500.90
  5. Step 5: Solve for x
    x = 16,157,017,500.90/144,618.53
  6. Step 6: Final answer
    x = 111,721.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.